NEET Chemistry The p-Block Elements (XII) Questions Solved

B(OH)3 + NaOH   NaBO2 + Na[B(OH)4] +H2O

How can this reaction is made to proceed in forward direction?

(a) addition of cis 1,2 diol

(b) addition of borax

(c) addition of trans 1,2 diol

(d) addition of Na2HPO4

(a) H3BO3 acts as weak monobasic Lewis acid.

(i) B(OH)3 + NaOH  Na[B(OH)4

on addition of cis 1,2 diol in H3bo3 solution, acidic strength of H3BO3 increases due to chelation effect.

Difficulty Level:

  • 41%
  • 29%
  • 17%
  • 15%